Fig. 2

Odds ratios and prevalence of risk factors for long-term mechanical ventilation in men and women. The figure illustrates the odds ratios of individual risk factors along with their prevalence. Each circle represents a risk factor, with yellow circles corresponding to women and blue circles corresponding to men. Risk factors that were found to be non-significant in the individual analyses are shown as transparent circles. The size of each circle reflects the prevalence of the risk factor within the respective population. The outermost circle categorizes the different risk factors: blue represents diagnoses (chronic diseases at admission, admission diagnoses, and diagnoses within the last 365 days prior to admission), and red represents surgeries and procedures during the inpatient stay (hospital stay, 365 days prior to admission, and within the first 96 h of the inpatient stay). The area of each circle indicates the prevalence in the population. The dotted circle marks a hazard ratio of 1, with the distance of each comorbidity from the circle’s center reflecting the magnitude of the odds ratio (as shown in Table 2). Hazard ratios smaller than 1 are plotted inward, while those greater than 1 are plotted outward.